There are roughly two kinds of earthlings people in this world: those who love Rick Yancey’s The 5th Wave series and those who haven’t read it yet.

The YA sci-fi book series, the first adaptation of which landed in theaters in January, started in 2013 and has had readers wondering whether we actually do ever want to encounter life out there ever since. (If it’s anything like this bleak imagining, then that’s a hell to the no.)

As the the third and final installment to the series The Last Star inches nearer to its spring release, the author, who points to John Christopher's The Tripods as a reference for his particular brand of menacing visitors from outer space, assures us all that we will finally get the answers to our most burning questions about this extraterrestrial-filled reality he created to give us many shudders and nightmares.

MTV News spoke with Yancey about what we can expect from book three, and he hinted that we are going to see Cassie and her tiny band of survivors wield one major piece of advantage over those seemingly unbeatable aliens.

“I think there’s one thing that the Others fail to take into account, and that was the power of the teddy bear,” said Yancey. “And that’s why the teddy bear is such a symbol throughout the book. I don’t think that they totally comprehended the indestructibility and resilience of human love ... I think that’s a profundity that can get lost, that the whole driving force of all the books, and particularly in the first story, is what Cassie hangs onto is her connection to her brother. To the love that she has for him.”

Indeed, 5th Wave readers well know that the teddy bear served as both a visual and emotional stimulus for Cassie (portrayed by Chloë Grace Moretz in the film version) to carry on in the minuscule hopes of rescuing her kid brother Sam, despite the odds being stacked to sky-scraping heights against her. That tenacity and resilience was also kinda contagious, even to a certain someone who should have been completely immune to even her strongest human sentiments.

Yes, we’re talking about Evan, the unlikely hunk of the trilogy, whose body was claimed when he was still in utero as an Other meant to help usher in the final blows against humanity. In The Infinite Sea, Evan’s apparent disloyalty to the Others becomes a major factor in their survival efforts, but we’re left with a giant question mark as to his real motives and, more importantly, what makes him so different than the other meanies that are running roughshod over all humankind.

According to Yancey, his third chapter to this series answers that question (and more) unequivocally.

“My goal with the third book was to answer some very fundamental things: What was the ultimate purpose? What is the ultimate fate of each character? And what is going to be the fate of the planet? I think those questions are answered,” Yancey said.

“There will always be room for readers to wonder, well, how did this element fit in? Why did this certain thing happen?" Yancey added. "But the big ones, the big questions -- why, what are they really after, what is the purpose of all this, what happens to Cassie, Ben, Evan and Sam and all of those people -- those questions are answered.”

As the recently released first chapter preview for The Last Sea indicates, the third installment will also carry forth Yancey’s stylish tradition of introducing new character viewpoints to move the narrative forward.

“There are a couple of character perspectives that get introduced in the third book,” he explained. “This was the great fun and challenge of writing the third book was taking elements from the first two books and giving them the payoff they really deserved.”

Yancey promises that all this perspective-jumping prose will serve a real purpose when we get through book three.

“I don’t like it, and I don’t know many people who do, stylistic choices or narrative choices that authors make that just seem sort of arbitrary -- just thrown in to be artistic or for some reason that’s not justified by the story itself,” said Yancey. “I hope with the third book that readers discover this is why I did these multiple narrative things because he wanted to have this kind of ending. And I hope I achieve that. I hope readers are wowed. I wouldn’t have this kind of ending if I had decided to tell the story in one straight-forward way.”

The Last Star will hit shelves on May 24.